Craftsman 351.217520 Operator's Manual page 15

• Next, prepare the turning stock by squaring it up to the
size of the largest square or round section in your plan.
The stock can be cut to the exact length of the proposed
turning. However, in most cases, it is best to leave the
stock a little long at one or both ends to allow for trimming.
• Mount the stock in the lathe and rough it off to a maxi-
mum-size cylinder.
• Now, project your plan onto the turning by pencil marking
the various critical dimensions along the length of the
spindle. These dimensions can be laid out with an ordinary
ruler or by using a template. Make the pencil marks about
W' long so they will be visible when the work is revolved
under power. The lines can be quickly traced around the
spindle by touching each line with the pencil.
• After marking, use the parting tool to make sizing cuts at
all of the important shoulders. When learning, you will find
it best to make sizing cuts to accurately plot the various
diameters. Experienced wood workers can manage with
fewer such cuts at the important shoulders.
• Plan each sizing cut so that it is in waste stock and make
each cut deep enough so that there will be just enough
wood left under the cut for the finishing process.
• Once the sizing cuts have been completed, rough-out the
excess wood with a gouge. Then, proceed with the finish-
ing process by making the various types of cuts required.
RECOMMENDED SPEED
Always follow recommended speed to do spindle turning
depending upon the size and length of workpiece.
ROUGH FINISH
SQUARE LENGTH RPM RPM
1 to 2" 1 to 16" 1600 2100
2 to 4" 1 to 16" 1000 2100
4" Plus 1 to 16" 1000 1600
FACEPLATE AND CHUCK TURNINGS
PLANNING THE WORK
Make a layout first, to provide a visual pattern to follow while
working the turning. Pattern can be laid out in the same man-
ner as spindle patterns - or templates can be made which
can be held against the work for visual comparison. Circles
to locate the various critical points (at which the contours of
the faceplate take distinct form) can be quickly scribed on
the rotating work by using the dividers.
Figure 50
PLANNING VARIOUS CUTS
The circumference of a faceplate turning is roughed-out
and finished in the same manner that a spindle is worked.
Practically all of the balance of the operations, however, are
done by using scraping methods. A few of the standard con-
tours which must often be tuned are illustrated in the accom-
panying sketch which also shows the proper chisels for shap-
ing these contours. Any roughing out to depth is generally
accomplished with the gouge held in the scraping position.
Use of Template
Spear Skew
Square Round
Nose Nose
Round Nose
Chisel
Figure 51
Chisel
Measuring
Depth
RECOMMENDED SPEED
Always follow recommended speed to do faceplate and chuck
turning depending upon the size and thickness of workpiece.
ROUGH FINISH
SQUARE THICKNESS RPM RPM
4 to 7" Up to 2" 1600 2100
4 to 7" 2 to 4" 1600 2100
4 to 7" 4" Plus 1000 2100
8 to 12" Up to 2" 1000 2100
8 to 12" 2 to 4" 1000 2100
8 to 12" 4" Plus 1000 1600
DEEP RECESSES
• The first step is to remove as much wood as possible by
boring into the center with the largest wood bit available.
This can be accomplished as illustrated in Figure 52. Be
careful to measure in advance the depth to which drill
can be allowed to go.
O==
Figure 52 - Boring to Depth
• Now, remove the bulk of the waste (to rough-out the
desired recess) by scraping with the round-nose chisel or
the gouge. Remove up to within _/8" of finished size in this
manner. Finish off the inside circumference by scraping
with the spearpoint chisel or skew. Smooth the bottom
of the recess by scraping it flat with the flat nose chisel.
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